diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/pcie/aer/aer_inject.c | 31 |
1 files changed, 28 insertions, 3 deletions
diff --git a/drivers/pci/pcie/aer/aer_inject.c b/drivers/pci/pcie/aer/aer_inject.c index b3cf6223f63a..f62079ff06dd 100644 --- a/drivers/pci/pcie/aer/aer_inject.c +++ b/drivers/pci/pcie/aer/aer_inject.c @@ -27,6 +27,10 @@ #include <linux/stddef.h> #include "aerdrv.h" +/* Override the existing corrected and uncorrected error masks */ +static int aer_mask_override; +module_param(aer_mask_override, bool, 0); + struct aer_error_inj { u8 bus; u8 dev; @@ -322,7 +326,7 @@ static int aer_inject(struct aer_error_inj *einj) unsigned long flags; unsigned int devfn = PCI_DEVFN(einj->dev, einj->fn); int pos_cap_err, rp_pos_cap_err; - u32 sever, cor_mask, uncor_mask; + u32 sever, cor_mask, uncor_mask, cor_mask_orig, uncor_mask_orig; int ret = 0; dev = pci_get_domain_bus_and_slot((int)einj->domain, einj->bus, devfn); @@ -361,6 +365,18 @@ static int aer_inject(struct aer_error_inj *einj) goto out_put; } + if (aer_mask_override) { + cor_mask_orig = cor_mask; + cor_mask &= !(einj->cor_status); + pci_write_config_dword(dev, pos_cap_err + PCI_ERR_COR_MASK, + cor_mask); + + uncor_mask_orig = uncor_mask; + uncor_mask &= !(einj->uncor_status); + pci_write_config_dword(dev, pos_cap_err + PCI_ERR_UNCOR_MASK, + uncor_mask); + } + spin_lock_irqsave(&inject_lock, flags); err = __find_aer_error_by_dev(dev); @@ -378,14 +394,16 @@ static int aer_inject(struct aer_error_inj *einj) err->header_log2 = einj->header_log2; err->header_log3 = einj->header_log3; - if (einj->cor_status && !(einj->cor_status & ~cor_mask)) { + if (!aer_mask_override && einj->cor_status && + !(einj->cor_status & ~cor_mask)) { ret = -EINVAL; printk(KERN_WARNING "The correctable error(s) is masked " "by device\n"); spin_unlock_irqrestore(&inject_lock, flags); goto out_put; } - if (einj->uncor_status && !(einj->uncor_status & ~uncor_mask)) { + if (!aer_mask_override && einj->uncor_status && + !(einj->uncor_status & ~uncor_mask)) { ret = -EINVAL; printk(KERN_WARNING "The uncorrectable error(s) is masked " "by device\n"); @@ -425,6 +443,13 @@ static int aer_inject(struct aer_error_inj *einj) } spin_unlock_irqrestore(&inject_lock, flags); + if (aer_mask_override) { + pci_write_config_dword(dev, pos_cap_err + PCI_ERR_COR_MASK, + cor_mask_orig); + pci_write_config_dword(dev, pos_cap_err + PCI_ERR_UNCOR_MASK, + uncor_mask_orig); + } + ret = pci_bus_set_aer_ops(dev->bus); if (ret) goto out_put; |
